Radiology Practice Test Questions
with Verified Solutions
How do you correct a foreshortened image? - ANS-decrease the vertical angulation
Who discovered x-rays - ANS-Wilhelm Conran Roentgen
When were x-rays discovered - ANS-1895
X-rays travel at what speed? - ANS-186,000 miles per second.
What type of radiation is most dangerous? - ANS-all is equally dangerous
What is an impregnated sheet? - ANS-lead apron
When is it acceptable for the operator to hold an x-ray in the patient's mouth? - ANS-
never
What is the Gonadal region? - ANS-male reproductive organs
What is the purpose of an aluminum filter? - ANS-to filter out the low and long energy
rays
What material is a collimator made of? - ANS-lead
What size periapical film is most likely to be used on a small child? - ANS-0
How do you correct an elongated image? - ANS-increase the vertical angulation
How will a film appear if it is accidentally struck by light? - ANS-black
How will a film appear if it was unexposed? - ANS-clear
What is another term for bite-wing x-rays? - ANS-interproximal
True or false, can metal be penetrated by x-rays? - ANS-true
How do you protect the reproductive organs? - ANS-by using a lead apron
How many x-rays may be taken on a pregnant woman? - ANS-as few as possible
, What does an occlusal film effectively view? - ANS-the dental arch
What might an occlusal film find? - ANS-abnormalities in the dental arch
Foreshortening is the result of what? - ANS-too much vertical angulation
What causes an overlapped image? - ANS-improper horizontal angulation
Radiolucent or Radiopaque
mental foramen - ANS-radiolucent
Radiolucent or Radiopaque
caries - ANS-radiolucent
Radiolucent or Radiopaque
dentin - ANS-radiopaque
Elongation is the result of what? - ANS-not enough vertical angulation
What type of film is used to show the apices? - ANS-periapicals
True or false before fabricating a denture, should you take x-ray on an edentulous
patient? - ANS-true
If a film is drastically elongated, how do you correct it? - ANS-increase the vertical
angulation
What may the result be, if an x-ray operator is holding the film the patient? - ANS-
amputation
When an intra-oral film is in the mouth, what is the lead foil between? - ANS-film and the
tongue
What material is most radiopaque? - ANS-amalgam
Name 3 things a bwx is used for? - ANS-to check to interproximal caries, bone height,
open margins
True or false, periapical films come in various sizes? - ANS-true
What happens if you do not direct the central ray to cover the film? - ANS-cone cut
X-rays that are exposed in the mouth are high or low energy? - ANS-high energy (short
wavelengths)
A panoramic film is not acceptable in detecting what? - ANS-decay
with Verified Solutions
How do you correct a foreshortened image? - ANS-decrease the vertical angulation
Who discovered x-rays - ANS-Wilhelm Conran Roentgen
When were x-rays discovered - ANS-1895
X-rays travel at what speed? - ANS-186,000 miles per second.
What type of radiation is most dangerous? - ANS-all is equally dangerous
What is an impregnated sheet? - ANS-lead apron
When is it acceptable for the operator to hold an x-ray in the patient's mouth? - ANS-
never
What is the Gonadal region? - ANS-male reproductive organs
What is the purpose of an aluminum filter? - ANS-to filter out the low and long energy
rays
What material is a collimator made of? - ANS-lead
What size periapical film is most likely to be used on a small child? - ANS-0
How do you correct an elongated image? - ANS-increase the vertical angulation
How will a film appear if it is accidentally struck by light? - ANS-black
How will a film appear if it was unexposed? - ANS-clear
What is another term for bite-wing x-rays? - ANS-interproximal
True or false, can metal be penetrated by x-rays? - ANS-true
How do you protect the reproductive organs? - ANS-by using a lead apron
How many x-rays may be taken on a pregnant woman? - ANS-as few as possible
, What does an occlusal film effectively view? - ANS-the dental arch
What might an occlusal film find? - ANS-abnormalities in the dental arch
Foreshortening is the result of what? - ANS-too much vertical angulation
What causes an overlapped image? - ANS-improper horizontal angulation
Radiolucent or Radiopaque
mental foramen - ANS-radiolucent
Radiolucent or Radiopaque
caries - ANS-radiolucent
Radiolucent or Radiopaque
dentin - ANS-radiopaque
Elongation is the result of what? - ANS-not enough vertical angulation
What type of film is used to show the apices? - ANS-periapicals
True or false before fabricating a denture, should you take x-ray on an edentulous
patient? - ANS-true
If a film is drastically elongated, how do you correct it? - ANS-increase the vertical
angulation
What may the result be, if an x-ray operator is holding the film the patient? - ANS-
amputation
When an intra-oral film is in the mouth, what is the lead foil between? - ANS-film and the
tongue
What material is most radiopaque? - ANS-amalgam
Name 3 things a bwx is used for? - ANS-to check to interproximal caries, bone height,
open margins
True or false, periapical films come in various sizes? - ANS-true
What happens if you do not direct the central ray to cover the film? - ANS-cone cut
X-rays that are exposed in the mouth are high or low energy? - ANS-high energy (short
wavelengths)
A panoramic film is not acceptable in detecting what? - ANS-decay
